EditText Settext not working with Fragment

Question

I have fragments for 3 states of a screen; Add, Edit and View. In Add, I create an entity and save it. Next time I open it in View mode and set the entity name using

Answer 1

There are some classes of View in Android should save their status when their container is detached. Fragment.onViewCreated() should be called before View.onSaveInstanceState(). So if you set a value in the method Fragment.onViewCreated(). The value should be cleared in the method View.onRestoreInstanceState(Parcelable state).

For example,class TextView,RecyclerView and so on.You can read the code of TextView.java:

    public Parcelable onSaveInstanceState() {
    Parcelable superState = super.onSaveInstanceState();

    // Save state if we are forced to
    final boolean freezesText = getFreezesText();
    boolean hasSelection = false;
    int start = -1;
    int end = -1;
    ....
    if (freezesText || hasSelection) {
        SavedState ss = new SavedState(superState);
        ....
    }
    ....
   }

There are to params to control whether to save the state: "freezesText" and "hasSelection". TextView can't be selected,so hasSelection is false. the function ,getFreezesText(),return false in class TextView too. So,TextView would not save the state. the code of EditText.java:

    @Override
    public boolean getFreezesText() {
    return true;
    }

EditText return true,so EditText should save the state.

There some method to fix this bug:

1.implement EditText.getFreezesText() and return false,and clear the state of select in EditText

2.implement onSaveInstanceState of EditText, return null.like this:

 public Parcelable onSaveInstanceState() {
      super.onSaveInstanceState();
     return null;
 }

3.use EditText.setSaveEnable(false);

4.add param in xml " saveEnable='false'"